that cave oob is useful to get to the other side, which you can get to the other side, it is a risky oob strat but you have to not get hit by the lava you can actually get hit by jumping beneath the lava and onto the lava, it works on all versions, it works on Gamecube, Xbox, PC, PS2, PS3, Wii and xbox 360. we don't know about the cutscene skips because i haven't made it all the way through still need more practice of it. if you fail you you kind of fall of and do death abuse in the lava or fall down forever while doing oob or glitching while landing on the wrong way